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c++windowswinapigdi

Screen Capture Specific Window

Is it possible to screen capture a specific window (also possibly of another process)?

Currently I am capturing the entire desktop of a specific monitor, however what I truly want is to capture the content of a specific window (regardless of its position).

Solution

  • Yes it is. All what you need is get handle to window which you want to capture and use WinAPI function PrintWindow for example:

    // Get the window handle of calculator application.
HWND hWnd = ::FindWindow( 0, _T( "Calculator" ));

// Take screenshot.
PrintWindow( hWnd, getDC(hWnd), 0 );

    Here you have PrintWindow documentation.